Image for a portion of a display screen



FIG. 1 is a front view of an image for a portion of a display screen showing our new design; and,

FIG. 2 is an enlarged view of the claimed region.

The broken line showing of the display screen is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for an image for a portion of a display screen, as shown and described. 